Intelligence Reform and Terrorism Prevention Act of 2004…
“ The use, or even the threatened use, of MANPADS, atomic or radiological weapons, or the variola virus, against the United States, its allies, or its people, poses a grave risk to the security, foreign policy, economy, and environment of the United States. Accordingly, the United States has a compelling national security interest in preventing unlawful activities that lead to the proliferation or spread of such items, including their unauthorized production, construction, acquisition, transfer, possession, import, or export. ”
